Cutting tool



Nov. 22, 1927. 1,649,899

c. D. HELLYER CUTTING TOOL Filed Sept. 9

'F.E ..L Z 2 IN VEN TOR.

ATTORNEY.

Patented Nov. 22, 1927.

UNITED STATES onnivrnnrn. HELLYEB, on os rrennns, cam-roams Corrine'roon.

Application filed September 2. 1924. Serial is. 735229. Y i IThisinvention relates to cutting machines.

The general object ofv the invention is to provide an improved rotarycutting tool which is particularly adapted for operating on inaccessibleparts of various devices.

One of the specific objects of the invention is to providean improvedcutting tool comprising a handle portion, a cutter, and a:

pilot wherein the cutter is held in cutting position by the pilot.

A further object of my invention is to provide a tool including a handleand a pair of slidable cutting knives, together with a pilot which isadapted to be moved to position to hold the cutting knives fixed.

Another object of the invention is to provide novel means for holding acutting tool in a holder.

Other objects of the invention will be apparent from the followingdescription taken in connection with the accompanying drawings whereinFig. 1 is an elevation of a tool embodying the. features ofmy invention;Fig. 2 is a view similar to Fig. lwith the cutting knives and associatedparts in section; Fig. 3 is a section on line 33, Fig. 1; Fig. 4 is asection on line 4-4:, Fig. 3, and Fig. 5 is a view similar to Fig. 3with the cutting knives removed.

Referring to the drawing by reference characters, I have shown myinvention as comprising a body part 11 which may be a solid cylindricalbar of metal or other material having a hole 12 at its upper end. Ahandle member 14 may be inserted through the hole 12 for the purpose ofoperating the tool. The lower part of the body part 11 is indicated asprovided with a pair of parallel knife holding slots 16. Y

Each of the slots 16 is spaced an even distance from the center of thehandle and the two slots are preferably of the same depth. Within theslots I mount cutters 17. Each of the cutters is provided with a cuttingportion 18.

The end of the body 11 is shown as provided with a central recess 20.This recess provides shoulder portions 21.

clamping member 22. This clamping member 22 is thicker than the depth ofthe recess 20 so that it projects out of the recess.

Upon the lower end of the body 11 I secure a cap member 25. This capmember is provided with an internal cavity 26 which ac-' commodates theclamping member 22. The

Arrangedwithin the recess 20 I show a washer-like.

cap 25 maybe securedin place by screws 27- or in any other desiredmanner." I

The cap 25, the locking member 22, and the lower portion of the bodypart 11 are shown as provided with co-axial recesses 30. The, portionsof this recess within the body 11 is provided with threads toaccommodate the threadeden'd of a pilot 35. This pilot may be, made; ofvarious diameters tosuit varlous conditions and is interchangeable, isshown as provided with a transverse hole 36 to receive a member foradjusting it.

The pilot may be provided with a shoulder 37 which is preferably spaceda short distance from the end of the cap 25. A second shoulder 38 isarranged upon the pilot and is adapted to engage the clamping member 22.l/Vhen the pilot 35 is rotated it will be apparent that the shoulder 27will be brought into tight engagement with the clamping member 22, thusforcing the latter against the cutters 17 and holding them firmly inposition. Adjustments of the cutter maybe readily made by rotating thepilot, adjusting the cutters, and again tightening the'pilot.

From the foregoing description, it will be apparent that I have providedan improved adjustable cutting tool which is adapted for a wide varietyof uses and Which'can be cheaply made and is very effective inoperation.

Having thus described my invention, I claim: 7

1. A cutting tool comprising a bodypart having a pair of transverseslots therein, a cap fitted over said slots, a cutter adjustably mountedineach slot, said cutter having a plane face thereon, a clamping memberwithin said cap, said clamping member having a plane face engaging theplane face on the cutting member, a pilot, and means on said pilot toforce said clamping member into engagement with said cutter.

2. A cutting tool, comprising anelongated body part having a pair oftransverse slots adjacent one end thereof, a cutter mounted for movementin each ofsaid slots, a pilot threaded in said body, a cap on said body,said cap having a recess therein, a clamping member in said recess, saidpilot having a shoulder thereonfor engaging said clamping member wherebythe cutters are held in adjusted position. i

3. A cutting tool comprising a'body parthaving a handle thereon, a pairof transverse slots at one end of said body part, a cutter said recess,and means whereby said pilot will cause said clamping member to engagesaid cutters,

4. A cutting tool comprising a body part having a handle thereon, apairof transverse slots at one end of said body part, a cutter slidablymounted in each slot, a cap arranged upon said end of the body part,said cap having a recess therein, a clamping member mounted Within saidcap and adapted to engage said cutters, said body having a recessbetween said cutters, a pilot threaded into said recess said pilothaving a shoulder thereon for engaging said clamping member to force thelatter against said cutters.

5. A cutting tool comprising an elongated body part having a, pair ofsubstantially parallel transverse slots adjacent one end thereof andextending entirely across said end, a cutter mounted for movement ineach of sald slots, a removable cap on said body, said cap having a partoverlying said'slots and having a recess therein, a clamplng memberforce said clamping'member against each of said cutters. I

In testimony whereof, I hereunto afiix my signature. e a V 1 CLEMENT D.HELLYER.

in said recess, said clamping member comprising a fiat piece of materialand means'to.

